# -*- coding: utf-8 -*-#
#-------------------------------------------------------------------------------
# 建立者:       加一
# Name:         demo4.25
# Description:  修改列表S中的前两个元素值
# Author:       加一
# Date:         2019/2/26
#-------------------------------------------------------------------------------

s = ["Bill", "Mike", "John"]
s[0] = "Mary"
s[1] = 20
print(s)